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GB1321651A - Electrostatographic toner additive - Google Patents

Electrostatographic toner additive

Info

Publication number
GB1321651A
GB1321651A GB3161770A GB3161770A GB1321651A GB 1321651 A GB1321651 A GB 1321651A GB 3161770 A GB3161770 A GB 3161770A GB 3161770 A GB3161770 A GB 3161770A GB 1321651 A GB1321651 A GB 1321651A
Authority
GB
United Kingdom
Prior art keywords
toner
additive
dynes
developer
cleaning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3161770A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
Original Assignee
Xerox Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26707132&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB1321651(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of GB1321651A publication Critical patent/GB1321651A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/087—Binders for toner particles
    • G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • G03G9/08713—Polyvinylhalogenides
    • G03G9/0872—Polyvinylhalogenides containing fluorine
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/0819—Developers with toner particles characterised by the dimensions of the particles
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/087—Binders for toner particles
    • G03G9/08784—Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775
    • G03G9/08791—Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775 characterised by the presence of specified groups or side chains
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

1321651 Electro-photography XEROX CORP 30 June 1970 [3 July 1969 23 April 1970] 31617/70 Heading G2H In a cyclic xerographic process using a drum having a photo-conductive surface and a powder developer comprising toner and carrier particles, the developer contains a polymeric cleaning additive of smaller particle size (0.05-30 microns) than the toner, of critical surface tension at least 2 dynes/cm less than the toner, having a Rockwell hardness of at least 10, being more electronegative than sulphur in the tribo-electric series and being employed in a proportion of 0.05-15% based on the toner. The critical surface tension of the toner may be greater than 24 dynes/cm and that of the additive may be less than 33 dynes/ cm. The developer may also contain zinc stearate. The additive may be polyethylene, polypropylene, polyvinyl chloride or fluoride, polyvinylidine chloride or fluoride, polytetrafluoroethylene, or polychlorotrifluoroethylene, or a co-polymer or mixture of polymers. Toners, colourants and carriers are specified. In the examples the toner is styrene/butyl methacrylate polymer or fumaric acid/2, 2-bis(4-hydroxyisopropoxy-phenyl)propane polyester, the colourant is carbon black, the carrier is steel core beads, and cleaning is effected with a polyurethane cleaning blade.
GB3161770A 1969-07-03 1970-06-30 Electrostatographic toner additive Expired GB1321651A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83909269A 1969-07-03 1969-07-03
US3135370A 1970-04-23 1970-04-23

Publications (1)

Publication Number Publication Date
GB1321651A true GB1321651A (en) 1973-06-27

Family

ID=26707132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3161770A Expired GB1321651A (en) 1969-07-03 1970-06-30 Electrostatographic toner additive

Country Status (11)

Country Link
JP (1) JPS511130B1 (en)
AT (1) AT301334B (en)
BE (1) BE752944A (en)
CH (1) CH549822A (en)
DE (1) DE2032393C3 (en)
ES (2) ES381389A1 (en)
FI (1) FI56907C (en)
GB (1) GB1321651A (en)
NL (1) NL165306C (en)
NO (1) NO131626C (en)
PL (1) PL88884B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170610A (en) * 1985-01-08 1986-08-06 Canon Kk Electrophotographic developer
GB2180948A (en) * 1985-08-27 1987-04-08 Canon Kk Electrographic developer
US4945388A (en) * 1988-09-20 1990-07-31 Minolta Camera Kabushiki Kaisha Method and apparatus for cleaning a color image forming apparatus by sticking developer on the photoconductor without forming an image
US5482808A (en) * 1993-03-25 1996-01-09 Nec Corporation Electrostatic image developer

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE789988A (en) * 1971-10-12 1973-04-12 Xerox Corp COMPOSITION OF DEVELOPER AND METHOD FOR ITS USE
DE2352604B2 (en) * 1972-10-21 1980-09-11 Konishiroku Photo Industry Co., Ltd., Tokio Toner for electrostatographic dry developers
CA1088798A (en) * 1975-08-25 1980-11-04 Meurig W. Williams Electrostatographic developing material containing toner particles and a polystyrene additive
JPS6324214U (en) * 1986-07-28 1988-02-17

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1172840A (en) * 1965-12-02 1969-12-03 Rank Xerox Ltd Xerographic Carrier.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170610A (en) * 1985-01-08 1986-08-06 Canon Kk Electrophotographic developer
GB2180948A (en) * 1985-08-27 1987-04-08 Canon Kk Electrographic developer
GB2180948B (en) * 1985-08-27 1989-08-09 Canon Kk An image forming method
US4945388A (en) * 1988-09-20 1990-07-31 Minolta Camera Kabushiki Kaisha Method and apparatus for cleaning a color image forming apparatus by sticking developer on the photoconductor without forming an image
US5482808A (en) * 1993-03-25 1996-01-09 Nec Corporation Electrostatic image developer

Also Published As

Publication number Publication date
NO131626C (en) 1975-06-25
NL165306B (en) 1980-10-15
NL165306C (en) 1981-03-16
ES381389A1 (en) 1973-04-16
NL7009918A (en) 1971-01-05
AT301334B (en) 1972-08-25
DE2032393A1 (en) 1971-01-21
DE2032393C3 (en) 1985-04-25
DE2032393B2 (en) 1978-04-06
FI56907B (en) 1979-12-31
BE752944A (en) 1971-01-04
CH549822A (en) 1974-05-31
NO131626B (en) 1975-03-17
JPS511130B1 (en) 1976-01-14
FI56907C (en) 1980-04-10
ES410206A1 (en) 1975-12-01
PL88884B1 (en) 1976-10-30

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414A Case decided by the comptroller ** specification amended (sect. 14/1949)
49R Reference inserted (sect. 9/1949)
PS Patent sealed [section 19, patents act 1949]
SP Amendment (slips) printed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee